<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            margin:0;
            padding:0;
            list-style: none;
        }
        body {
            width: 100wh;
            height: 100vh;
            color: #fff;
            background:  #23D5AB;
            transition: ease;
            opacity: 0;
        }
        body:hover{
            opacity: 1;
        }
        body {
            -webkit-transition-property: all;
            -o-transition-property: all;
            transition-property: all;
            -webkit-transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
            -o-transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
            transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
            -webkit-transition-duration: 150ms;
            -o-transition-duration: 150ms;
            transition-duration: 150ms;
        }

    </style>
</head>

<body>

</body>

</html>